(function(define) {
    'use strict';
    define([
        'jquery',
        'underscore',
        'common/js/spec_helpers/template_helpers',
        'edx-ui-toolkit/js/utils/spec-helpers/ajax-helpers',
        'js/student_account/models/RegisterModel',
        'js/student_account/views/RegisterView'
    ],
        function($, _, TemplateHelpers, AjaxHelpers, RegisterModel, RegisterView) {
            describe('edx.student.account.RegisterView', function() {
                var model = null,
                    view = null,
                    requests = null,
                    authComplete = false,
                    PLATFORM_NAME = 'edX',
                    COURSE_ID = 'edX/DemoX/Fall',
                    USER_DATA = {
                        email: 'xsy@edx.org',
                        name: 'Xsy M. Education',
                        username: 'Xsy',
                        password: 'xsyisawesome',
                        level_of_education: 'p',
                        gender: 'm',
                        year_of_birth: 2014,
                        mailing_address: '141 Portland',
                        goals: 'To boldly learn what no letter of the alphabet has learned before',
                        honor_code: true
                    },
                    THIRD_PARTY_AUTH = {
                        currentProvider: null,
                        providers: [
                            {
                                id: 'oa2-google-oauth2',
                                name: 'Google',
                                iconClass: 'fa-google-plus',
                                loginUrl: '/auth/login/google-oauth2/?auth_entry=account_login',
                                registerUrl: '/auth/login/google-oauth2/?auth_entry=account_register'
                            },
                            {
                                id: 'oa2-facebook',
                                name: 'Facebook',
                                iconClass: 'fa-facebook',
                                loginUrl: '/auth/login/facebook/?auth_entry=account_login',
                                registerUrl: '/auth/login/facebook/?auth_entry=account_register'
                            }
                        ]
                    },
                    FORM_DESCRIPTION = {
                        method: 'post',
                        submit_url: '/user_api/v1/account/registration/',
                        fields: [
                            {
                                placeholder: 'username@domain.com',
                                name: 'email',
                                label: 'Email',
                                defaultValue: '',
                                type: 'email',
                                required: true,
                                instructions: 'Enter your email.',
                                restrictions: {}
                            },
                            {
                                placeholder: 'Jane Doe',
                                name: 'name',
                                label: 'Full Name',
                                defaultValue: '',
                                type: 'text',
                                required: true,
                                instructions: 'Enter your username.',
                                restrictions: {}
                            },
                            {
                                placeholder: 'JaneDoe',
                                name: 'username',
                                label: 'Username',
                                defaultValue: '',
                                type: 'text',
                                required: true,
                                instructions: 'Enter your username.',
                                restrictions: {}
                            },
                            {
                                placeholder: '',
                                name: 'password',
                                label: 'Password',
                                defaultValue: '',
                                type: 'password',
                                required: true,
                                instructions: 'Enter your password.',
                                restrictions: {}
                            },
                            {
                                placeholder: '',
                                name: 'level_of_education',
                                label: 'Highest Level of Education Completed',
                                defaultValue: '',
                                type: 'select',
                                options: [
                                {value: '', name: '--'},
                                {value: 'p', name: 'Doctorate'},
                                {value: 'm', name: "Master's or professional degree"},
                                {value: 'b', name: "Bachelor's degree"}
                                ],
                                required: false,
                                instructions: 'Select your education level.',
                                restrictions: {}
                            },
                            {
                                placeholder: '',
                                name: 'gender',
                                label: 'Gender',
                                defaultValue: '',
                                type: 'select',
                                options: [
                                {value: '', name: '--'},
                                {value: 'm', name: 'Male'},
                                {value: 'f', name: 'Female'},
                                {value: 'o', name: 'Other'}
                                ],
                                required: false,
                                instructions: 'Select your gender.',
                                restrictions: {}
                            },
                            {
                                placeholder: '',
                                name: 'year_of_birth',
                                label: 'Year of Birth',
                                defaultValue: '',
                                type: 'select',
                                options: [
                                {value: '', name: '--'},
                                {value: 1900, name: '1900'},
                                {value: 1950, name: '1950'},
                                {value: 2014, name: '2014'}
                                ],
                                required: false,
                                instructions: 'Select your year of birth.',
                                restrictions: {}
                            },
                            {
                                placeholder: '',
                                name: 'mailing_address',
                                label: 'Mailing Address',
                                defaultValue: '',
                                type: 'textarea',
                                required: false,
                                instructions: 'Enter your mailing address.',
                                restrictions: {}
                            },
                            {
                                placeholder: '',
                                name: 'goals',
                                label: 'Goals',
                                defaultValue: '',
                                type: 'textarea',
                                required: false,
                                instructions: "If you'd like, tell us why you're interested in edX.",
                                restrictions: {}
                            },
                            {
                                placeholder: '',
                                name: 'honor_code',
                                label: 'I agree to the Terms of Service and Honor Code',
                                defaultValue: '',
                                type: 'checkbox',
                                required: true,
                                instructions: '',
                                restrictions: {}
                            }
                        ]
                    };

                var createRegisterView = function(that) {
                // Initialize the register model
                    model = new RegisterModel({}, {
                        url: FORM_DESCRIPTION.submit_url,
                        method: FORM_DESCRIPTION.method
                    });

                // Initialize the register view
                    view = new RegisterView({
                        fields: FORM_DESCRIPTION.fields,
                        model: model,
                        thirdPartyAuth: THIRD_PARTY_AUTH,
                        platformName: PLATFORM_NAME
                    });

                // Spy on AJAX requests
                    requests = AjaxHelpers.requests(that);

                // Intercept events from the view
                    authComplete = false;
                    view.on('auth-complete', function() {
                        authComplete = true;
                    });
                };

                var submitForm = function(validationSuccess) {
                // Create a fake click event
                    var clickEvent = $.Event('click');

                // Simulate manual entry of registration form data
                    $('#register-email').val(USER_DATA.email);
                    $('#register-name').val(USER_DATA.name);
                    $('#register-username').val(USER_DATA.username);
                    $('#register-password').val(USER_DATA.password);
                    $('#register-level_of_education').val(USER_DATA.level_of_education);
                    $('#register-gender').val(USER_DATA.gender);
                    $('#register-year_of_birth').val(USER_DATA.year_of_birth);
                    $('#register-mailing_address').val(USER_DATA.mailing_address);
                    $('#register-goals').val(USER_DATA.goals);

                // Check the honor code checkbox
                    $('#register-honor_code').prop('checked', USER_DATA.honor_code);

                // If validationSuccess isn't passed, we avoid
                // spying on `view.validate` twice
                    if (!_.isUndefined(validationSuccess)) {
                    // Force validation to return as expected
                        spyOn(view, 'validate').and.returnValue({
                            isValid: validationSuccess,
                            message: 'Submission was validated.'
                        });
                    }

                // Submit the email address
                    view.submitForm(clickEvent);
                };

                beforeEach(function() {
                    setFixtures('<div id="register-form"></div>');
                    TemplateHelpers.installTemplate('templates/student_account/register');
                    TemplateHelpers.installTemplate('templates/student_account/form_field');
                });

                it('registers a new user', function() {
                    createRegisterView(this);

                // Submit the form, with successful validation
                    submitForm(true);

                // Verify that the client contacts the server with the expected data
                    AjaxHelpers.expectRequest(
                        requests, 'POST',
                        FORM_DESCRIPTION.submit_url,
                        $.param(USER_DATA)
                    );

                // Respond with status code 200
                    AjaxHelpers.respondWithJson(requests, {});

                // Verify that auth complete is triggered
                    expect(authComplete).toBe(true);

                // Form button should be disabled on success.
                    expect(view.$submitButton).toHaveAttr('disabled');
                });

                it('sends analytics info containing the enrolled course ID', function() {
                    var expectedData;

                    createRegisterView(this);

                // Simulate that the user is attempting to enroll in a course
                // by setting the course_id query string param.
                    spyOn($, 'url').and.callFake(function(param) {
                        if (param === '?course_id') {
                            return encodeURIComponent(COURSE_ID);
                        }
                    });

                // Attempt to register
                    submitForm(true);

                // Verify that the client sent the course ID for analytics
                    expectedData = {course_id: COURSE_ID};
                    $.extend(expectedData, USER_DATA);

                    AjaxHelpers.expectRequest(
                        requests, 'POST',
                        FORM_DESCRIPTION.submit_url,
                        $.param(expectedData)
                    );
                });

                it('displays third-party auth registration buttons', function() {
                    createRegisterView(this);

                // Verify that Google and Facebook registration buttons are displayed
                    expect($('.button-oa2-google-oauth2')).toBeVisible();
                    expect($('.button-oa2-facebook')).toBeVisible();
                });

                it('validates registration form fields', function() {
                    createRegisterView(this);

                // Submit the form, with successful validation
                    submitForm(true);

                // Verify that validation of form fields occurred
                    expect(view.validate).toHaveBeenCalledWith($('#register-email')[0]);
                    expect(view.validate).toHaveBeenCalledWith($('#register-name')[0]);
                    expect(view.validate).toHaveBeenCalledWith($('#register-username')[0]);
                    expect(view.validate).toHaveBeenCalledWith($('#register-password')[0]);

                // Verify that no submission errors are visible
                    expect(view.$formFeedback.find('.' + view.formErrorsJsHook).length).toEqual(0);

                // Form button should be disabled on success.
                    expect(view.$submitButton).toHaveAttr('disabled');
                });

                it('displays registration form validation errors', function() {
                    createRegisterView(this);

                // Submit the form, with failed validation
                    submitForm(false);

                // Verify that submission errors are visible
                    expect(view.$formFeedback.find('.' + view.formErrorsJsHook).length).toEqual(1);

                // Expect that auth complete is NOT triggered
                    expect(authComplete).toBe(false);

                // Form button should be re-enabled on error.
                    expect(view.$submitButton).not.toHaveAttr('disabled');
                });

                it('displays an error if the server returns an error while registering', function() {
                    createRegisterView(this);

                // Submit the form, with successful validation
                    submitForm(true);

                // Simulate an error from the LMS servers
                    AjaxHelpers.respondWithError(requests);

                // Expect that an error is displayed and that auth complete is NOT triggered
                    expect(view.$formFeedback.find('.' + view.formErrorsJsHook).length).toEqual(1);
                    expect(authComplete).toBe(false);

                // If we try again and succeed, the error should go away
                    submitForm();

                // This time, respond with status code 200
                    AjaxHelpers.respondWithJson(requests, {});

                // Expect that the error is hidden and that auth complete is triggered
                    expect(view.$formFeedback.find('.' + view.formErrorsJsHook).length).toEqual(0);
                    expect(authComplete).toBe(true);

                // Form button should be disabled on success.
                    expect(view.$submitButton).toHaveAttr('disabled');
                });
            });
        });
}).call(this, define || RequireJS.define);
